Chromosomal and morphological divergences in Atlantic populations of the frillfin goby Bathygobius soporator (Gobiidae, Perciformes)

Lima-Filho, Paulo Augusto de; Cioffi, Marcelo de Bello; Bertollo, Luiz Antônio Carlos; Molina, Wagner Franco

doi:10.1016/j.jembe.2012.08.004

Cited by 32 publications

(59 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, this is not a universal occurrence, since distinct situations have also been observed among Perciformes. Thus, integrating cytogenetic approaches with body patterns has shown combined variation in both parameters for other species, such as Bathygobius soporator (Lima-Filho et al 2012). In addition to corroborating molecular evidence identifying S. brownii and S. setapinnis as distinct taxa (Reed et al 2001(Reed et al , 2002, cytogenetic aspects and body shape patterns shown here also highlight divergences of these two species with the Atlantic lookdown, S. vomer.…”

Section: Discussionsupporting

confidence: 77%

Atlantic moonfishes: independent pathways of karyotypic and morphological differentiation

et al. 2012

Self Cite

View full text Add to dashboard Cite

Fish of the genus Selene, known as lookdowns or moonfish, are one of the most morphologically derived groups of the family Carangidae, whose phylogenetic relationships are still largely unknown. In this study, we discuss karyoevolutionary aspects of three representatives of this genus from the Western Atlantic: Selene brownii (2n = 48; FN = 48), Selene setapinnis (2n = 46; FN = 48), and Selene vomer (2n = 48; FN = 50). Their body patterns were also investigated and compared to one another and in relation to two other species of different genera. Two mechanisms of karyotypic evolution seem to have acted in the diversification of this genus, namely pericentric inversions and centric fusions. Mapping of rDNA sequences showed that chromosome pairs bearing 5S rDNA sites are similar, whereas those bearing 18 rDNA sites are morphologically distinct while apparently also exhibiting interspecies synteny. Although the nucleolar organizer-bearing chromosomes are extremely efficient cytotaxonomic markers among Selene species, others cytogenetic patterns of these species are relatively conserved. Hybridization with telomeric probes (TTAGGG) n did not exhibit interstitial telomeric sites (ITS), especially in S. setapinnis, where, along with a reduction in diploid number, a large metacentric pair derived from centric fusion is present. Data obtained by geometric morphometrics enable a clear morphological distinction among the three species, as well as in relation to two other species of the genus Caranx and Oligoplites. Data obtained suggest that morphologic evolution in Selene species was primarily dissociated from visible changes that occurred at the chromosomal level.

show abstract

Section: Discussionsupporting

confidence: 77%

Atlantic moonfishes: independent pathways of karyotypic and morphological differentiation

et al. 2012

Self Cite

View full text Add to dashboard Cite

show abstract

“…Indeed, discrimination of some species through the exclusive use of phenotypic criteria has been problematic [45], since it reveals limited or ambiguous morphological characters or those with significant plasticity. Furthermore, phenotypic variations are not always effective phylogenetic characters, given that they may reflect adaptations to different ecological regimes to which the species are subjected in their distribution area [46]. Aspects of coloration have masked the marked morphological similarities between Stegastes rocasensis and S. sanctipauli as observed in the present study.…”

Section: Discussionmentioning

confidence: 58%

“…Indeed, in the damselfish Abudefduf saxatilis, counts and multivariate morphometry analyses between different populations, revealed clinal variation between northeastern/ RA-SPSPA regions and the southern coast of Brazil, in addition to marked morphological differences between the populations of Rocas atoll, Fernando de Noronha archipelago and São Pedro and São Paulo archipelago [61]. This condition has been identified in other Atlantic species, such as the frillfin goby (Bathygobius soporator), which exhibits significant morphological variations between contiguous populations along the Brazilian coast, the action of ecological factors being the likely mobilizers of morphological diversification [46].…”

Section: Discussionmentioning

confidence: 99%

“…Indeed, as a response to environmental characteristics, many fish species demonstrate considerable phenotypic plasticity that increases their aptitude to a determinate environment [53]. When compared to other insular ecosystems, the low habitat diversity of Rocas atoll [54] may have driven the morphological changes observed in the population of S. rocasensis from RA due to the different ecological resources in the systems [46,55,56].…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

A reappraisal of Stegastes species occurring in the South Atlantic using morphological and molecular data

et al. 2016

Self Cite

View full text Add to dashboard Cite

The taxonomic status of Pomacentridae species can be difficult to determine, due to the high diversity, and in some cases, poorly understood characters, such as color patterns. Although Stegastes rocasensis, endemic to the Rocas atoll and Fernando de Noronha archipelago, and S. sanctipauli, endemic to the São Pedro and São Paulo archipelago, differ in color pattern, they exhibit similar morphological characters and largely overlapping counts of fin rays and lateral-line scales. Another nominal insular species, S. trindadensis, has recently been synonymized with S. fuscus but retained as a valid subspecies by some authors. Counts and morphometric analyses and mitochondrial DNA (COI, 16SrRNA, CytB) and nuclear DNA (rag1 and rhodopsin) comparisons of three insular species (S. rocasensis, S. sanctipauli and S. trindadensis) and three other South Atlantic species (S. fuscus, S. variabilis and S. pictus) were carried out in the present study. Analyses of the principal components obtained by traditional multivariate morphometry indicate that the species in general have similar body morphology. Molecular analyses revealed conspicuous similarity between S. rocasensis and S. sanctipauli and between S. trindadensis and S. fuscus and a clear divergence between S. variabilis from Northeast Brazil and S. variabilis from the Caribbean region. Our data suggest that S. sanctipauli is a synonym of S. rocasensis, support the synonymy of S. trindadensis with S. fuscus, and reveal the presence of a likely cryptic species in the Caribbean that has been confused historically with S. variabilis.

show abstract

“…Indeed, the distribution and frequency of a large number of chromosomal markers have allowed the discrimination of cryptic karyotypes or slight interspecific chromosomal differentiations, not diagnosed by conventional cytogenetic techniques (Motta-Neto et al, 2011;Lima-Filho et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Interregional cytogenetic comparisons in Halichoeres and Thalassoma wrasses (Labridae) of coastal and insular regions of the southwestern Atlantic

Amorim¹,

Cioffi²,

Bertollo³

et al. 2017

Genet. Mol. Res.

View full text Add to dashboard Cite

Chromosomal and morphological divergences in Atlantic populations of the frillfin goby Bathygobius soporator (Gobiidae, Perciformes)

Cited by 32 publications

References 63 publications

Atlantic moonfishes: independent pathways of karyotypic and morphological differentiation

Atlantic moonfishes: independent pathways of karyotypic and morphological differentiation

A reappraisal of Stegastes species occurring in the South Atlantic using morphological and molecular data

Interregional cytogenetic comparisons in Halichoeres and Thalassoma wrasses (Labridae) of coastal and insular regions of the southwestern Atlantic

Contact Info

Product

Resources

About